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The continuity of maternal stress from during, to after, pregnancy is a progression of maternal-foetal stress transfer which is significant in impacting the infant's overall wellbeing. Postnatal maternal stress, such as postpartum depression , has an enormous impact on the emotion, mental and behavioural growth of a child, hence can aggravate ...
Maternal Blood Volume. During pregnancy the plasma volume increases by 40-50% and the red blood cell volume increases only by 20–30%. [22] These changes occur mostly in the second trimester and prior to 32 weeks gestation. [24] Due to dilution, the net result is a decrease in hematocrit or hemoglobin, which are measures of red blood cell ...
These outside factors could be anything from poor nutrition, excess cortisol levels or even genetic influences. The fetus's development can be impacted through the level of the placenta, and there is evidence to show how prenatal stress can have consequences on the placenta and in turn the fetus during pregnancy. [10]
In multiple studies on nonhuman females across species, found that high levels of cortisol postpartum was linked to low levels of maternal care. [53] [15] [55] [11] However, when cortisol levels were high during pregnancy there was an increase in maternal care. [56] [15] This difference did not hold true for humans of females and first time ...
The theory holds that the fraternal birth order effect is a result of a maternal immune response that is produced towards a factor of male development over several male pregnancies. [9] Bogaert's hypothesis argues that "the target of the immune response may be male specific molecules on the surface of male fetal brain cells (e.g., including ...
hPL is present only during pregnancy, with maternal serum levels rising in relation to the growth of the fetus and placenta. Maximum levels are reached near term, typically to 5–7 mg/L. [3] Higher levels are noted in patients with multiple gestation. Little hPL enters the fetal circulation. Its biological half-life is 15 minutes.
The levels of hCG in the body increase rapidly in the first few weeks of pregnancy, doubling every 48–72 hours. [7] The highest level of hCG is reached in week 10 or week 11, later the levels of hCG can be used to estimate the age of the fetus and monitor the progress of the pregnancy. [6]
Estrogen, progesterone, and human chorionic gonadotropin (hCG) levels throughout pregnancy. Estrogen, progesterone, and 17α-hydroxyprogesterone (17α-OHP) levels during pregnancy in women. [ 1 ] The dashed vertical lines separate the trimesters .
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